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2 217 256

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IPC

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Application

2001130395/02, 2001-11-13

(24)

Start date

2001-11-13

(22)

Actual filing date

2001-11-13

(45)

Published

2003-11-27

(72)

Inventor

Kondratenko V.G.Grankin V.A.Belobeev A.S.Romanov V.V.

(73)

Holder

Kondratenko Vladimir Grigor'EvichGrankin Vladimir AlekseevichBelobeev Anatolij StepanovichRomanov Viktor Vasil'Evich

METHOD FOR MAKING CYLINDRICAL ARTICLES WITH BOTTOM FROM SQUARE BLANK AND APPARATUS FOR PERFORMING THE SAME Russian patent published in 2003 - IPC

Abstract RU 2217256 C2

FIELD: plastic metal working, namely deep drawing of cylindrical articles. SUBSTANCE: method comprises steps of drawing without thinning flange portion of blank and drawing with local thinning in zone for setting thickness around apotherms of blank; realizing drawing by means of punch with use of die; simultaneously performing drawing without thinning and drawing with local thinning; using non-rigid flat holder for pressing blank flange for providing drawing process. Gap value between punch and die Z is equal to 0.95 So or less than that value; radius R of drawing edge of die is in range (9 - 11)So or less. EFFECT: lowered corrugation degree, possibility for drawing part by one transition. 2 cl, 4 dwg

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RU 2 217 256 C2

Authors

Kondratenko V.G.

Grankin V.A.

Belobeev A.S.

Romanov V.V.

Dates

2003-11-27—Published

2001-11-13—Filed